USRE9052E - cooper - Google Patents

Description

2 SheeEs-Sheet 1.

BQYOGH, Assignor, by mesne ass i gnmentmto C. COOPERLG. ROGERS, F. S. FAIRGHILD, and C. G. Gobrm 7 Portable and Road Engine. No. 9,052. Reissued Jan. 20,1880;

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. O a 7 JV 5 I i 0 Z a I n '0 A M J 5i 7 Q 4 e 1) L v INVENTOR I ATTORNEY UNITED STATES PATENT OFFICE.

ASSIGNMENTS, TO CHARLES COOPER, GEORGE tOGERS, FRANK L.

FAIROIIIIID, AND CHARLES G. COOPER.

PORTABLE AND ROAD ENGINE.

SPECIFICATION forming part of Reissued Letters Patent No. 9,052, dated January 20, 1880 Original No. 177,052, dated M: y *2, 1876. Application for Reissue filed November 20, 1879.

ble and Road Engines, which improvements are fullv set forth in the' following specification, reference being had to the accompanying drawings.

My improvements relate to an engine intended for use chiefly when at rest, but which is capable of being moved from place to place by its own machinery, and of drawing wagons, 8343,, with it.

The first part of myimprovements consists in forming" the traction-wheels with springcalks, which extend through the rim of the wheel, and are formed upon the ends of platesprings attached to the inside of such rims.

The second part of my improvements is directed to means for permitting differential movement of the traction or driven truck wheels, as is required, for instance. when the machine turns a-corner or travels in 'a curved path, in which case one wheel should travel faster than the other. i

To this end my improvement consists in the combination, with the independent truck or traction wheels, provided each with a main gear-wheel, of a counter-shaft having two gearwheels, one fast and the other loose, geared to said main wheels, andcompensating or differential gear on said counter-shaft connected to and receiving motion from the en gi lie-shaft, substantially as hereinafter set forth.

The third part of my improvements applies to the steam-drum. This extends some distance above the boiler, and its ends are connected to two upright steam-vessels. The steam-pipe extei'iding' to the engine has its mouth at or near the middle of the lougitudinal steam-drum, so that in ascending or descending ahill (where the boiler is much inclined) the water will at no time be in contact with the mouth of the steam-pipe.

The fourth part of my improvements consists in the construction of steering apparatus. In this there is a vertical shaft, having at bottom cross-arms whose ends are connected to the fore axle, and whose upper end 'carriesa screw-gear wheel turned by a gearscrew on a shaft turned by a hand-wheel or crank at the furnace end of the machine, I

Figurel is a side view of engine, part in section. Fig.2is atop view. Fig.3is a detail side view of the feed-water apparatus. Fig. 4. is a detail, part in side elevation and part in section, illustrating part of the gear-connection between the engine and traction-wheels..

Fig. 5 is a section at x .r, Fig. 4.

The two traction-wheels A A are similarly constructed, having a sufficiently broad tread or rim, a, with transverse slots 0., in which work the spring-calks a. These calks form the outwardly-bent ends of" the 'i'latc-springs a whose other ends are attached to the insides of the rims a. Thecalks are to prevent the wheels from slipping in situation where this would otherwise take place, and the springing feature is for the purpose of allowing them to retire on coming in contact with a hard substance, so as to allow the wheel to roll smoothly over. Each wheel turns on its arbor or axle B, which projects from the side of the fire-box B.

To the traction-wheels A A are attached chain-gear wheels 0 0, connected by gearchains D D to chain-wheels E E. The chainwheels E E are onthe opposite ends of a counter-shaft running transversely near the middle of the machine. The wheel E is keyed fast to the shaft F; but the wheel E turns loosely on said shaft.

To provide for differential movement of the driven truck or tract-ion wheels, I make use of compensating or differential gear mounted on the counter-shaft F. Said compensating-gear is here shown as consisting of the wheel J, mounted and turning loosely on the counter-. shaft, and having rotation by gear-connection with the engine or crank shaft P. The wheel J carries a planet spur-pinion, H, keyed to a shaft, I, having journal-bearings in and eccentric to the axis of said .wheel, which pinion. gears with a spur-wheel, Gr, fast to the hub of loose Wheel E. Upon the shaft I, on the opposite side of the wheel J from the pinion H,

is attached a chainrgtear wheel, K, connected by an endless chain, K to a chain-gear wheel, 13, mounted onand' attached to' the countet" shaft F.

4 therewith by steam boxesior vertical drnmsb b.

' The arrangementis such-that where the boiler. is considerably inclined fore and aft drysteam will always w The spur-wheel J receives motion from theengine-shaft when the engine is moving from place to place, and the action of the rotation of the said ,wh'eel J is to cause the rotation of i the independent traction-wheels through the instrnmentality ofithe gears'H G- K L E E G- G, and the above-described construction of parts allows eithergof thetraetion-wheels to turn faster than the other, as is, required, when traveling on-a-curve. f v

I The wheel J (to cause its rotation) is engaged by a'spnrwheel, M, which may be thrown out of- N) by sliding it 'endwi'se upon its arbor-O, The spunwheel Nis upon .the crank-shaft P of the engine, and this shaft carries the m di-.-

crank-whel p l No novelty is claimed int-he engine .QI in which q-is the steam-chest, q the connecting,

.nary belt-wheel .,p, eccentric p, and crank pr rod, and g? the feed-water pump. This pump 5 has a su pply-pipe, R, leading to the water-tank S, in .close'proximity to the ash-pan T.

U is the cdnction-pi'pe of "the pump,'which iseoiled' within the extends to the boiler 'to feed water thereto:

exhaust-steam box V, and

The steam from the engine exhausts intoone side of the box V, and the steam passes out at theotherend of said box througha pipe, V,

whose end is turned upward-'iiithesmokstack ;\V to'increase the" draft. 1 Xis the steam-pipesupplying the engine. This pipe X extends from the steam-chest or valve-box q to about the mid-length of the long steam-drum Y as shown in Fig. 1.

The steam-drum extends longitudinally above the boiler-Z, and near its end is connected pass .to the engine, because the .mouth of the steam-pipe, being at the midlength of the steain-drnm,'will always be clear of water, even'ifit should of the steam-drum.v v The fore axle 0 is capable of turning upon its pivot-bar d, and is turned to guide the ma- I chine by the following mechanism: 0 e are rods gear with the spur-wheel J (and also that fill oneof the ends connecting the opposite endsiof the axle to the ends ofthe cross-arms f f of the vertical shaft g. At the top of the shaft g is a screwg'ear wheel, -h, engaged by a gear-screw, i, on the shaft j, extending to the other end of the boiler,;and carrying a crank or hand Wheel, k, by which the rod is turned. I claimy 1. The traction-wheels supplied withspringcalksii, working in their rims, and projected more or less by the plate-sprin gs a substantially asset forth. 2. In a traction-engine, independent. truck or traction wheels, provided each ,with amain gear-wheel, in combination with the countersha-ft having two gear-wheels, the one fastand the other loose, to gear with'said 'mai-n. gearwheels, thecompensating-gear on said counmovement to said compensating-gear fromthe ter-shaft, and mechanism for transmitting;

engine fhe combination being'and acting snhstantially as herein set forth.

3. Thefcombination' of thesha'ft F, wheels G H J K L, and gear-chain'K, to cause the rotation-of one-or both'of the wheels E E"0n shaft F, but allow difi'erent speeds of rotation loose wheel J ,as set forth.

4. The-combination ot 'tract-ion-wheels A A, chain-gear wheels 0 U and 6E, gear-chains D D (,shaft F, spur-wheels G 5. The longitudinally-extended steam-drum Y, connected-to steam-boxes b b at different mid-length 0f the latter, substantially as and for the purpdses set forth. v N6, The guiding mechanism consisting of horizontal shaft j, provided with worm 1 ,gearwheel h, vertical'shaft y,, cross-bar f, rods 2 c, and axlec, as set forth.

Inftestimon y whereof I have hereunto signed my name .this' 10th dayof November, A. D.

' Bannis er) roan. y Witnesses! SAML. KNIGHT,.'

GEO. H; KNIGHT.

inthe "said wheels by power applied to the J, chain-wheels K L, and chain K, substantially as set-forth.

parts of the boiler-top, substantially as set

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